India, District Census Handbook, Jammu & Kashmir, Jammu District, 1961, p.15, p.5:

India, District Census Handbook, Jammu & Kashmir, Jammu District, 1961, p.15, p.5:

Summarised below:

In Jammu District alone, which is a part of the larger Jammu Province, Muslims numbered 158,630 and comprised 37% of the total population of 428,719 in the year 1941. 

In the year 1961, Muslims numbered only 51,693 and comprised only 10% of the total population of 516,932. The decrease in the number of Muslims in Jammu district alone was over 100,000.